There are four types of regular club games: open, invitational/restricted, newcomer, and Bridge Plus+. One or more types of games may be listed on a single sanction.
For ease of identification, especially in filling out monthly reports, these games are assigned classes as follows:

Open Class 4
Invitational/Restricted Class 3
Newcomer Class 2
Bridge Plus+ Class 1

On written request to the ACBL Club and Member Services Department, the club may change the classification of a game.